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Children's Health

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The Dangers of Whooping Cough (Pertussis)

Are you at risk?
WebMD Feature
Reviewed by Roy Benaroch, MD

Whooping cough might sound like a disease from another era. But the illness, also called pertussis, is alive and well in the U.S.

Known as a childhood illness, whooping cough is actually most common in adolescents and adults. They pass whooping cough to other family members without realizing that their cold-like symptoms are really pertussis.

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Under the Affordable Care Act, many health insurance plans will provide free children’s preventive care services, including checkups, vaccinations and screening tests. Learn more.

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For siblings and spouses, catching pertussis might mean a severecough and missed work days. But when the recipient is an unvaccinated infant, whooping cough can spell serious trouble.

“Most of the severe disease and complications from pertussis occur in very young children, who either haven’t been vaccinated or haven’t completed their vaccinations yet,” says Harry Keyserling, MD, professor of pediatric infectious disease at Atlanta’s Emory University and a spokesman for the American Academy of Pediatrics. In 2012, there were 18 reported deaths from pertussis nationwide.

Most of these vulnerable children catch whooping cough from a family member at home. Although pertussis symptoms are mild in vaccinated people, it’s still highly infectious. And, mild pertussis in an adult easily becomes severe illness in an infant.

Classic Symptoms of Whooping Cough

Bordetella pertussis is a bacterium that can live in the human respiratory tract. Pertussis is passed through secretions, so sneezes and coughs spread the bug around. Symptoms generally start a week or so after B. pertussis lands in the nose or mouth.

The classic course of whooping cough is rarely seen today, except in incompletely vaccinated children. In its initial phase, pertussis looks just like any of the many common colds children experience in their early years. Runny nose, sneezing, and low-grade fevers are typical.

Unlike a cold, though, pertussis infection doesn’t clear up in a week or so. The nasal congestion resolves, but is replaced by periods of intense coughing. In this second phase of pertussis, coughing fits occur once every one to two hours and are worse at night. The cough can be so severe that it can cause vomiting or passing out.

In older infants and toddlers, a gasp for air after a coughing fit can sometimes produce a loud “whoop.” Many infants younger than 6 months of age don’t have the whoop, but they may develop gagging or shortness of breath. Teens and adults also usually do not have the ‘whooping’ sound in their coughs. The intense coughing phase can last from one to 10 weeks.

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